Docker Hub doesn't support build stages yet

[prymitive]

docker/hub-feedback#1039

[terinjokes]

@prymitive I don't believe so. The issue isn't the FROM as syntax, but the version of Docker EE they're running simply not supporting the feature yet.

[prymitive]

yeah, sad panda, I'll write a horrible dockerfile for now, to get builds back, and will work on build stages on travis to get docker images pushed from there, seem doable - https://docs.travis-ci.com/user/docker/

[prymitive]

Can we get this back on until Docker Hub deploys a new version of docker-ee?

Also: it seems that there's even tinier image we can use for second stage - https://hub.docker.com/_/scratch/
And using that gives me a working docker image with:

$ docker images
REPOSITORY          TAG                       IMAGE ID            CREATED             SIZE
unsee               v0.7.2-111-gf3f13ba-dev   cbc0c58f8e15        31 seconds ago      18.5MB